Centrifugal machine for separating solids from liquids.



A. J. nmcsson. GENTRIFUGAL MACHINE FOR SEPARATING SOLIDS FROM LIQUIDS.

APPLICATION IILED JULY 24,1908. 7

921,814. I Patented May18,-1909.

WI 7775835 8: lA/VE/YTOR UNTTED P' iil iililhi" ANDERS JOHAN ERICSSON,OF STOOKSUND, STOOKHOLM, SWEDEN, ASSIGNOR TO AKTIEBOLAGET SEPARATOR, OFS'lOCKHOLIii, SWEDEN, A. (iQBlPANY.

CENTRIFUG-AL MACHINE FOR SEPARATING SOLIDS FRDM LIQUIDS.

Application filed July 24, 1908.

To all whom it may concern:

Be it known that I, ANDERs JonAN limosing at Stocksund, Stockholm,Sweden, civil ful Improvements in Centrifugal Machines for SeparatingSolids from Liquids; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to same, reference being had to the accompany111g drawings, and to letters or figures of'ref erence marked thereon,which form a part of this specification.

My invention relates to centrifugal machines for separating solidmatters from liquids, es ecially such of the nature specified in my U.Patents 773489, 822196, 832047 and 832048.

The present improvement more especially relates to the scraper-wheelsused in those constructions for conveying the solid matters from theinner wall of the bowl to an escape opening. I have had the experiencethat the shovels of the rotating wheels are soon worn oii, especiallywhen sharp and hard matters are to be treated in the machine, theconsequence being that the shovel wheels are soon unfit and must bereplaced by new ones. This drawback is avoided by the improvementforming the object of my present invention. According to saidimprovement one or more of the shovels are provided with shares,scrapers or the like somewhat extending outside the rim and shovels in aradial direction. These members thus serve as protectors for the shovelsand are preferably detachably connected to the same, for instance bymeans of screws, rivets or the like in order that they may easily beremoved and replaced by others, when worn out. 'The protecting membersserve also to loosen the solid matters deposited on the inner wall ofthe bowl, so that the same may be more easily caught up by the shovelsof the rotating wheels.

On the annexed drawing Figure 1 illustrates a shovel-wheel partly insection, showing the shovels and the protecting members attached tothem. Fig. 2 is a cross section of Fig. 1.

Specification of Letters Patent.

2 than the others. engineer, have invented certain new and usejmainingshovels against wearing.

Patented May 18,1909.

Serial No. 445,172.

a indicates the shovels, b the rim and c the hub of the wheel. SON, aSUbJGCt of the King of Sweden, resid- (Z is a shovel of a greater radialextension One or more such shovels may be adapted in order to protectthe re It is, however, more useful to arrange the protecting members inthe form of loosely connected scrapers, shares, shovels or the like.Four .lilferent kinds of such members are illuswhich it appertains tomake and use the trated in Fig. 1. (Z is a scraper somewhat extendingoutside the shovel and soldered to the same. (Z is a scraper connectedwith the shovel by means of a rivet, (1 shows a share connected with theshovel by means of a screw and d is a shovel-formed scraper connectedwith the shovel by means of a turnable rivet with rectangular head 6,which placed in a certain position passes through an opening f in theshovel, as shown'in Fig. 2 and can be detached from the same. As shownthe protecting member d is somewhat greater in cross section at itsouter extremity, and the wheel rim is provided with corre spondingnotches 9 (Fig. 1) in which the enlarged part enters, so that it issupported by the rim. The part of the different protecting membersextending outside the rim may, if desired be toothed or formed in anysuitable way.

What I claim is:

1. In a shovel-wheel, in combination, a rim, shovels connected with saidwheel for conveying the solid matters in centrifugal machines, one ormore shovels having a portion extending outward beyond both the rim andthe remaining shovels.

2. In a shovel-wheel, shovels for conveying the solid matters incentrifugal machines, one or more of the shovels having protectingmembers attached thereto, said protecting members extending outwardbeyond both the shovels and the rim.

3. In a shovel-wheel, shovels for conveying the solid matters incentrifugal machines, one or more of the shovels having protectingmembers loosely attached thereto, said protecting members extendingoutwardly beyond the shovels and the rim.

l. in a shovel-wheel, a rim, shovels for conveying the solid matters incentrifugal machines, one or more of the shovels having protectingmembers, a turnable rivet with my invention, I have signed my name inrectangular head entering a slot in the shovel t presence of twosubsorlblng wltnesses.

for loosely attaching said proteetin mem T bers to its shovel, saidprotectin niembers ANDERS JOHAL ERICSSON 5 extending outwardly beyondthe STlOVBlS and Witnesses:

the rim. HARRY ALBIHN,

In testimony, that I claim the foregoing as HJALMAR BATTERsTRoM.

